Defensive publication

ABSTRACT

COPOLYMERS OF METHYL METHACRYLATE AND 2-PHENYLALLYL ALCOHOL ARE PROVIDED WHEREIN THE COPOLYMERS ARE DERIVED FROM BETWEEN ABOUT 99% AND ABOUT 99.9% BY WEIGHT OF METHYL METHACRYLATE AND BETWEEN ABOUT 0.1% AND ABOUT 1% BY WEIGHT OF 2-PHENYLALLYL ALCOHOL. THE COPOLYMERS HAVE AN INHERENT VISOCITY OF AT LEAST 0.44 AND MAY BE MOLDED INTO SHAPED STRUCTURES SUCH AS LENSES.

DEEENSWE ULTCATIQN UNITED STATES PATENT OFFICE Published at the requestof the applicant or owner in accordance with the Notice of Dec. 16,1969, 869 O.G. 687. The abstracts of Defensive Publication applicationsare identified by distinctly numbered series and are arrangedchronologically. The heading of each abstract indicates the number ofpages of specification, including claims and sheets of drawingscontained in the application as originally filed. The files of theseapplications are available to the public for inspection and reproductionmay be purchased for 30 cents a sheet.

Defensive Publication applications have not'been examined as to themerits of alleged invention. The Patent Office makes no assertion as tothe novelty of the disclosed subject matter.

PUBLISHED MARCH 7, 1972 T896,013 COPOLYMERS 01F METHYL METHACRYLATEEugene P. Reilly, Wilmington, Del., assignor to E. I. du Pont de Nemoursand Company, Wilmington, Del. Filed Dec. 18, 1970, Ser. No. 99,514 Int.Cl. C08t 15/18 U.S. Cl. 26086.1 R No Drawing. 9 Pages SpecificationCopolymers of methyl methaerylate and Z-phenylallyl alcohol are providedwherein the copolymers are derived from between about 99% and about99.9% by weight of methyl methacrylate and between about 0.1% and about1% by weight of 2-phenyla1lyl alcohol. The copolymers have an inherentviscosity of at least 0.44 and may be molded into shaped structures suchas lenses.

